The lady ________ have done something wrong, because she is looking guilty.
A．wouldB．shouldC．canD．must
D

試題分析： 句意：這個女士一定做了錯事，因為她看起來很內(nèi)疚。表示肯定推測用“must have done”，would have done“本來會做”，can have done“本可以做卻沒有做”，should have done過去本應(yīng)該做卻沒有，所以選D。
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